Biosecurity is the method of preventing human germs and disease from entering barns and infecting herds of animals. Pigs can very easily contract illness or germs carried by humans – which is why biosecurity practices are so important. Each time a farmer, veterinarian, or other visitor enters a pig barn, they are required to take a shower before coming into contact with pigs. By following these practices, farmers are able to keep germs and illnesses from entering their barns – ultimately keeping their pigs healthy and safe!